package com.atguigu.netty.heartbeat;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.timeout.IdleStateEvent;

/**
 * @author: 叶子
 * @date: 2022/02/19 09:00
 **/
public class MyServerHandler extends ChannelInboundHandlerAdapter {
   /**
    * @Param ctx 上下文
    * @Return evt 事件
    * @throws Exception
    **/
    @Override
    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
        if (evt instanceof IdleStateEvent){
//            将evt 向下转型 IdleStateEvent
            IdleStateEvent event = (IdleStateEvent) evt;
            String eventType = null;
            switch (event.state()){
                case READER_IDLE:
                    eventType = "读空闲";
                    break;
                case WRITER_IDLE:
                    eventType = "写空闲";
                    break;
                case ALL_IDLE:
                    eventType = "读写空闲";
                    break;
            }
            System.out.println(ctx.channel().remoteAddress() + "--超时事件发生"+eventType);
            System.out.println("服务器做相应的处理...");
//            如果发生空闲，关闭通道
//            ctx.channel().close();
        }
    }
}